CN101726801A - Optical switching device and control method thereof - Google Patents

Abstract

The execution mode of the invention provides an optical switching device and a control method thereof, which belong to the field of network communication. The device comprises an input wave guide, a 1*2 beam splitter and two output wave guides; the input end of the 1*2 beam splitter is connected with the input wave guide, and the two output ends of the 1*2 beam splitter are respectively connected with the two output wave guides; the device also comprises at least one microring resonator and is provided with at least two coupling regions; and the two output wave guides are respectively connected with the arranged coupling regions and the microring resonator. The device and the method have the advantages of less waste and high extinction ratio.

Description

A kind of control method of optical switch device and optical switch device

Technical field

The present invention relates to network communication field, relate in particular to a kind of control method and optical switch device of optical switch device.

Background technology

Increase along with the quantity of information of communicating by letter, because " electronic bottleneck " effect, it is not high to adopt traditional photoelectricity exchange (OCS) technology to show bandwidth availability ratio, shortcomings such as limited speed, following optical communication net adopts based on the trend of IP(Internet Protocol) (the IP over DWDM) technology of dense wave division multipurpose more and more obvious, therefore corresponding high speed switching technology demand is also more and more urgent, and (Optical PacketSwitching OPS) is developing direction to adopt the packet switch of full light.Photoswitch is the Primary Component of all-optical communication network, pays close attention to for people always.

Prior art provides a kind of optical switch device, this device as shown in Figure 1, comprise: input waveguide 9,1*2 beam splitter 10, two transfer arms are (for the convenience of narrating, here two transfer arms are defined as transfer arm 3 respectively, transfer arm 4), two phase regulators 8,2*2 beam splitter 4 and two output waveguides are (for the convenience of narrating, here two output waveguides are defined as output waveguide 6 respectively, output waveguide 7), input waveguide 9 is connected with the input end of 1*2 beam splitter 10, two output terminals of 1*2 beam splitter 10 are connected with transfer arm 4 with transfer arm 3 respectively, the other end of transfer arm 3 and transfer arm 4 is connected with two input ends of 2*2 beam splitter 4, and two output terminals of 2*2 beam splitter 4 are connected with output waveguide 7 with output waveguide 6 respectively; Two phase regulators 8 are separately positioned on transfer arm 3 and the transfer arm 4, and regulate the phase place of the light signal of transfer arm 3 and transfer arm 4.

The principle of work of said apparatus is that this device comes the phase place of the light signal of control transmission arm 3 and transfer arm 4 by phase regulator 8, thereby controls the intensity of output waveguide 6 and output waveguide 7 light signal of exporting.The formula of the intensity of output waveguide 6 and output waveguide 7 output light signals is as follows, and the light signal strength that defines output waveguide 6 outputs here is I _A, the light signal strength of output waveguide 7 outputs is I _BThen:

$I_A=I_1\left({\mathrm{\φ}}_1\right)+I_2\left({\mathrm{\φ}}_2\right)+2\sqrt{I_1\left({\mathrm{\φ}}_1\right)I_2\left({\mathrm{\φ}}_2\right)}\cos [\mathrm{\Δ\φ}=({\mathrm{\φ}}_2-{\mathrm{\φ}}_1)]$

$I_B=I_1\left({\mathrm{\φ}}_1\right)+I_2\left({\mathrm{\φ}}_2\right)-2\sqrt{I_1\left({\mathrm{\φ}}_1\right)I_2\left({\mathrm{\φ}}_2\right)}\cos [\mathrm{\Δ\φ}=({\mathrm{\φ}}_2-{\mathrm{\φ}}_1)]$

φ wherein ₁Be the angle after the transfer arm 3 light signal phase shifts; φ ₂Angle after the transfer arm 4 light signal phase shifts; I ₁Be the intensity of transfer arm 3 light signals, I ₂Intensity for transfer arm 4 light signals.

Be the angle and the intensity of example transfer arm 3 and transfer arm 4 light signals when output waveguide 6 is described for " opening " attitude and " pass " attitude with output waveguide 6 below, from above-mentioned I _AExpression formula as can be seen, work as φ ₁And φ ₂When equating, I _ABe output as maximum and (suppose I here ₁And I ₂Also equate), be " opening " attitude of output waveguide 6; Work as φ ₁And φ ₂Differ 180 when spending, I _ABe output as minimum and (suppose I here ₁And I ₂Equate), be " pass " attitude of output waveguide 6.

In realizing process of the present invention, the inventor finds prior art, and there are the following problems:

Because prior art is to utilize the charge carrier effect of dispersion of silicon materials to realize the photoswitch high-speed switch, but when the plasma dispersion effect of charge carrier caused the variations in refractive index (for waveguide with regard to transformable phase change) of silicon materials, the absorption loss of following was also very big; Because the loss that modulation is introduced changes the symmetry of the light intensity of serious transfer arm 3 and transfer arm 4, improve again thereby the extinction ratio of photoswitch is very difficult.

Summary of the invention

Embodiment of the present invention provides a kind of control method and optical switch device of optical switch device, and described method and apparatus has the advantage that loss is low, extinction ratio is high.

The specific embodiment of the present invention provides a kind of optical switch device, and described device comprises: input waveguide, 1*2 beam splitter and two output waveguides; The input end of described 1*2 beam splitter links to each other with described input waveguide, and two output terminals of described 1*2 beam splitter link to each other with described two output waveguides respectively; Described device also comprises:

At least one micro-ring resonator and at least two coupled zones of setting;

Described two output waveguides are connected with micro-ring resonator in the coupled zone that is provided with respectively.

The specific embodiment of the invention also provides a kind of control method of optical switch device, comprising: input waveguide, 1*2 beam splitter and two output waveguides; The input end of described 1*2 beam splitter links to each other with described input waveguide, and two output terminals of described 1*2 beam splitter link to each other with described two output waveguides respectively, also comprise at least two coupled zones of at least one micro-ring resonator and setting; Described method comprises:

Described input waveguide is exported to described 1*2 beam splitter with light signal, described 1*2 beam splitter is divided into two ways of optical signals with described light signal and transmits in described two output waveguides, the two ways of optical signals of described two output waveguides transmission is imported described micro-ring resonator in two coupled zones that are provided with respectively, described micro-ring resonant is used to adjust the phase place and the splitting ratio of two ways of optical signals, and with the output terminal output of adjusted two ways of optical signals by described two output waveguides.

By the above-mentioned technical scheme that provides as can be seen, the technical scheme of the embodiment of the invention is by having adopted micro-ring resonator that the phase place of light signal is modulated, so it has the advantage that loss is low, extinction ratio is high.

Description of drawings

The structural drawing of a kind of optical switch device that Fig. 1 provides for prior art.

The structural drawing of a kind of optical switch device that Fig. 2 provides for the specific embodiment of the invention.

The structural drawing of a kind of optical switch device mode B that Fig. 3 provides for the specific embodiment of the invention.

The structural drawing of a kind of optical switch device mode C that Fig. 4 provides for the specific embodiment of the invention.

The structural drawing of a kind of optical switch device mode D that Fig. 5 provides for the specific embodiment of the invention.

The fundamental diagram of the micro-ring resonator of the introducing two-beam interference that Fig. 6 (a) provides for the specific embodiment of the invention.

The synoptic diagram of the coupled zone 241 that Fig. 6 (b) provides for the specific embodiment of the invention.

The relation of the biasing phase place of the relation of the straight-through ratio of the intensity of two coupled zones that Fig. 7 (a) provides for the specific embodiment of the invention and the straight-through ratio of the intensity of coupled zone 242 and required phase modulation and two arms.

Fig. 7 (b) leads directly to the relation of the output of ratio and two switch attitudes for the intensity of the coupled zone 242 that the specific embodiment of the invention provides.

Photoswitch state 1-under the different wave length that Fig. 8 (a) provides for the specific embodiment of the invention " opens " amplitude response of (static state).

The amplitude response of photoswitch state 2-" pass " under the different wave length that Fig. 8 (b) provides for the specific embodiment of the invention.

Embodiment

Embodiment of the present invention provides a kind of optical switch device, this device comprises as shown in Figure 2: input waveguide 21,1*2 beam splitter 22, two output waveguides 23 are (for the method for narrating, here two output waveguides are defined as output waveguide 231 and output waveguide 232), the input end of this 1*2 beam splitter 22 links to each other with input waveguide 21, and two output terminals of this 1*2 beam splitter 22 link to each other with two output waveguides 23 respectively; This device also comprises: at least one micro-ring resonator 25 and at least two coupled zones 24 of setting are (for the method for narrating, the coupled zone that will be arranged on here on the output waveguide 231 is defined as coupled zone 241, the coupled zone that is arranged on the output waveguide 232 is defined as coupled zone 242), these two output waveguides are connected with micro-ring resonator 25 in two coupled zones 24 that are provided with respectively at least.Wherein, the micro-ring resonator in this device is adjusted the phase place of light signal, adjusts the splitting ratio of light signal again.This be provided with the coupled zone implementation can for, on output waveguide and micro-ring resonator, coupling regime is set, and by being arranged on output waveguide and the spacing distance of micro-ring resonator and the coupling that the length of this spacing distance on output waveguide can realize light signal in this coupling regime.This spacing distance and the length of this spacing distance on output waveguide can be adjusted according to the actual coupling coefficient of coupled zone needs, and its concrete adjustment mode can be referring to the associated description in " Wave Guiding Optics ".

Optionally, this device can also comprise phase compensator 26, and this phase compensator 26 is arranged on the output waveguide between coupled zone 24 and the 1*2 beam splitter 22; Concrete being provided with can be between as shown in Figure 2 the coupled zone 242 and 1*2 beam splitter 22; Certainly in actual conditions, also can be between coupled zone 241 and 1*2 beam splitter 22.The implementation method of this phase compensator can be heating electrode, and the principle of its realization changes the refractive index of light signal on output waveguide for the temperature by the adjustment heating electrode, thereby reaches the purpose of adjusting the light signal phase place.

Optionally, this device can also comprise optical phase modulator 27, and this optical phase modulator 27 is arranged on the micro-ring resonator 25, and regulates the phase place by the light signal of this micro-ring resonator 25; Its particular location can be the optional position of micro-ring resonator 25, and the specific embodiment of the invention is not limited to its concrete position.The implementation method of this optical phase modulator can for, increase CMOS or PN junction in the position of optical phase modulator and realize.

The concrete outcome that above-mentioned two output waveguides are connected with micro-ring resonator 25 by two coupled zones 24 that are provided with respectively at least can be in the following manner any one:

Mode A, as shown in Figure 2, output waveguide 231 and output waveguide 232 are decussate texture (its infall does not influence the two ways of optical signals intersection to be passed through), this output waveguide 231 241 is connected with micro-ring resonator 25 in the coupled zone, and this output waveguide 232 242 is connected with micro-ring resonator 25 in the coupled zone.

Mode B, as shown in Figure 3, this mode increases phase compensator 32 and a coupled zone 31 is set on the basis of mode A, this output waveguide 232 242 is connected with micro-ring resonator 25 with coupled zone 31 in the coupled zone, and this phase compensator 32 is arranged on the output waveguide 232 between coupled zone 242 and the coupled zone 31; The connected mode of output waveguide 231 is constant.

Mode C, as shown in Figure 4, this mode output waveguide 231 and output waveguide 232 are parallel construction, this mode increases a micro-ring resonator 25 (for the convenience of narrating, with micro-ring resonator 25 called after micro-ring resonators 251 and micro-ring resonator 252) on the basis of method A; This output waveguide 231 241 is connected with micro-ring resonator 251 in the coupled zone; This output waveguide 232 242 is connected with micro-ring resonator 252 in the coupled zone, micro-ring resonator 251 and micro-ring resonator 252 41 are connected in the coupled zone, optionally, on this micro-ring resonator 25 phase compensator 42 can also be set, this phase compensator 42 can be arranged on any position of micro-ring resonator 251 or micro-ring resonator 252.

Mode D, as shown in Figure 5, this mode output waveguide 231 and output waveguide 232 are parallel construction, micro-ring resonator 25 in this mode is " 8 " type structure, this output waveguide 231 241 is connected with micro-ring resonator 25 in the coupled zone, this output waveguide 232 242 is connected with micro-ring resonator 25 in the coupled zone, optionally, on this micro-ring resonator 25 phase compensator 51 can also be set, this phase compensator 51 can be arranged on any position of micro-ring resonator 25.

For the technique effect of the specific embodiment of the invention better is described, now the technique effect that the present invention reaches is described in conjunction with principle of work of the present invention and accompanying drawing.

Structure with Fig. 2 is that example illustrates principle of work of the present invention below, 1X2 power beam splitter 22 is divided into two bundles with the input signal light of input waveguide, and pass to two output waveguides 231,232, two output waveguides 241,242 are coupled into micro-ring resonator 25 with the two-beam signal two coupled zones respectively, interfere the switching that realizes light path at the output terminal of two output waveguides thereby the two-beam signal produces in micro-ring resonator 25.For principle of work of the present invention better is described, principle of work of the present invention is described in detail below by calculating.

Fig. 2 is removed divided beams and input waveguide part, and do a little distortion and promptly can obtain Fig. 6 structural drawing, port E2, E4 corresponding respectively with Fig. 2 in the output terminal of two output waveguides, for the convenience of narrating, the output terminal that defines output waveguide 231 here is Output1; The output terminal of output waveguide 232 is Output2.

As shown in Figure 6, if do not consider the loss of two coupled zones then two coupled zones of micro-ring resonator can be expressed as:

$\left[\begin{array}{c}{E}_2\\ {\mathrm{<figure-callout\; id="6"\; label="E"\; filenames="H2008102252321E0000011.png"\; state="\{\{state\}\}">E</figure-callout>}}_6\end{array}\right]=\left[\begin{array}{cc}{c}_1& -j{s}_1\\ -j{s}_1& c_1\end{array}\right]\left[\begin{array}{c}{E}_1\\ E_5\end{array}\right];$ $\left[\begin{array}{c}{E}_4\\ {\mathrm{<figure-callout\; id="8"\; label="E"\; filenames="H2008102252321E0000011.png"\; state="\{\{state\}\}">E</figure-callout>}}_8\end{array}\right]=\left[\begin{array}{cc}{c}_2& -j{s}_2\\ -j{s}_2& c_2\end{array}\right]\left[\begin{array}{c}{E}_3\\ E_7\end{array}\right]$

Here, C _iBe the straight-through ratio of coupled zone intensity, S _iFor coupled zone intensity coupling ratio (during harmless coupling, has C _i ²+ S _i ²=1), owing to have only two coupled zones among Fig. 2, thus the i=1 here or 2, and can obtain

E ₇＝AE ₆，E ₅＝BE ₈，

Here propagation constant β=2 π n _Effλ, λ is an operation wavelength, γ is detour in the micro-ring resonant cavity field intensity remaining proportion (γ=1 expression lossless) in a week of light, Lu is the girth of whole ring, m, n is the two-part length ratio (therefore m+n=1 is arranged) that two coupled zones are divided into micro-ring resonator, modulation one section waveguide wherein, can realize the switching of " opening " " pass " state of light path, for the convenience of narrating, will " open " setting state is state 1, and " pass " setting state is a state 2, when switch is state 1, optical signals Output1 output, when switch is state 2, optical signals Output2 output;

Be two-part phase place.So utilize transition matrix to obtain

$\frac{E_2}{{\mathrm{<figure-callout\; id="1"\; label="E"\; filenames="H2008102252321E0000032.png,H2008102252321E0000041.png"\; state="\{\{state\}\}">E</figure-callout>}}_1}=\frac{c_1-c_2\mathrm{AB}}{1-c_1{c}_2\mathrm{AB}},$ $\frac{E_2}{{\mathrm{<figure-callout\; id="3"\; label="E"\; filenames="H2008102252321E0000011.png"\; state="\{\{state\}\}">E</figure-callout>}}_3}=\frac{-s_1{s}_{2}A}{1-c_1{c}_2\mathrm{AB}}$

$\frac{E_4}{{\mathrm{<figure-callout\; id="1"\; label="E"\; filenames="H2008102252321E0000032.png,H2008102252321E0000041.png"\; state="\{\{state\}\}">E</figure-callout>}}_1}=\frac{-s_1{s}_{2}B}{1-c_1{c}_2\mathrm{AB}},$ $\frac{E_4}{{\mathrm{<figure-callout\; id="3"\; label="E"\; filenames="H2008102252321E0000011.png"\; state="\{\{state\}\}">E</figure-callout>}}_3}=\frac{c_2-{\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="H2008102252321E0000032.png,H2008102252321E0000041.png"\; state="\{\{state\}\}">c</figure-callout>}}_1\mathrm{AB}}{1-c_1{c}_2\mathrm{AB}}---\left(1\right)$

Wherein, therefore the electric field strength E 2 of two output terminals and E4 can be expressed as by two bundle input light E1 and the relevant result of E3

$E_2=\frac{(c_1-c_2\mathrm{AB})E_1-s_1{s}_2{\mathrm{<figure-callout\; id="3"\; label="AE"\; filenames="H2008102252321E0000011.png"\; state="\{\{state\}\}">AE</figure-callout>}}_3}{1-c_1{c}_2\mathrm{AB}},$ ${\mathrm{<figure-callout\; id="4"\; label="E"\; filenames="H2008102252321E0000011.png"\; state="\{\{state\}\}">E</figure-callout>}}_4=\frac{-s_1{s}_2{\mathrm{BE}}_1+(c_2-{\mathrm{<figure-callout\; id="1"\; label="c"\; filenames="H2008102252321E0000032.png,H2008102252321E0000041.png"\; state="\{\{state\}\}">c</figure-callout>}}_1\mathrm{AB}){\mathrm{<figure-callout\; id="3"\; label="E"\; filenames="H2008102252321E0000011.png"\; state="\{\{state\}\}">E</figure-callout>}}_3}{1-c_1{c}_2\mathrm{AB}}---\left(2\right)$

If in switching-over light path, that output terminal of light signal is not exported in control, makes its output reach minimum, can realize very high extinction ratio so.(E when formula 2 satisfies certain condition ₄=0 or E ₂=0 o'clock), one of them output terminal always can be realized minimum output, promptly output valve is zero, obtains very high extinction ratio.Under suitable biasing, make the phase differential of the light signal of two output waveguides satisfy certain initial phase difference

The time, even the time can produce big loss at modulation the time, the coupling ratio of two coupled zones of control always in two output ports has minimum output, can realize High Extinction Ratio.

Illustrate how to obtain High Extinction Ratio with an example below, the loss of introducing when supposing modulation and the pass of phase place are linear relationship, suppose to regulate the loss that the π phase place can be introduced 4dB, get γ=0.995 (a circle loss that is micro-ring resonator is 0.044dB), the even merit of 1X 2 beam splitters is divided input signal, getting the coupled zone, to cut apart the ratio of micro-ring resonator be m=0.23, n=1-m=0.77, phase modulation

It is become Selecting the girth of micro-ring resonator is 1000um, supposes that on frequency of operation the micro-ring resonator effective refractive index is 3,

Utilize formula 1 can obtain Output2 and be output as zero condition:

So, by setting suitable coupled zone power coupling ratio, i.e. the c1 of the c2 of coupled zone 242 as shown in Figure 7 and coupled zone 241, can so that formula 3 set up, so just mean can be on definite frequency of operation realization state 1.Therefore in like manner can obtain state 2 by formula 1, promptly Output2 is output as zero condition:

So convolution 3 obtains with formula 4:

If coupled zone power coupling this moment ratio again can be so that there be phase modulation in formula 5

Photoswitch can be realized to the switching of state 2 so.

Shown in Fig. 7 (a), c2 can find the condition that obtains High Extinction Ratio in very on a large scale, and c1 increases along with the increase of c2, and this is because will make two light signals that are coupled into micro-ring resonator relevant; And to make one of them output port be output as null value, and need satisfy the certain power ratio, this power proportions can compensate the loss of micro-ring resonator itself, and the inhomogeneous merit branch of the beam splitter of modulation loss and front end; And required phase modulation Reduce along with the increase of c2, this be because along with the coupling ratio reduce the Q of micro-ring resonator _LoadValue rises, and near the phase change tuning-points speeds, and therefore the regulated quantity that needs also just reduces accordingly; But Output1 reduces along with the increase of c2, but because the output of Output1 only is subjected to being in the influence of loss of the micro-ring resonator of original state, output can keep higher value, when c2 and c1 level off to " 1 ", be that the coupling of output waveguide and micro-ring resonator is when very little, just begin to reduce rapidly, this also is because Q _LoadAfter value rose, energy increased in the time of advancing of micro-ring resonator, thereby lost, the less output waveguide that is coupled to; And the output of Output2 exists near maximal value (c2=0.9), illustrates will reduce to insert loss at the micro-ring resonator that is in this condition, and best design attitude is arranged; In the gamut, need the phase differential of two arms of biasing Substantially remain unchanged.

So the photoswitch state 1-that control coupled zone 241 makes c1=0.892 then can obtain shown in Fig. 8 (a) " opens " (static state) characteristic, this time is by output terminal 1 output, then by the modulation of the phase-modulator on little ring φ d=-0.133 π, just can reach the state 2-" pass " of the photoswitch shown in Fig. 8 (b), this time switches to Output2 output.Because another road output of two states in " opening " " pass " all is in minimum null value, and therefore very high extinction ratio is arranged.

The optical switch device that the specific embodiment of the invention provides because it has adopted micro-ring resonator that the phase place of light signal is modulated, so it has the little advantage of loss, and has the high characteristics of extinction ratio.

The specific embodiment of the invention also provides a kind of control method of optical switch device, comprises at least two coupled zones of input waveguide, 1*2 beam splitter, two output waveguides, at least one micro-ring resonator and settings; The input end of this 1*2 beam splitter links to each other with this input waveguide, and two output terminals of this 1*2 beam splitter link to each other with these two output waveguides respectively; This method comprises: after this input waveguide is exported to this 1*2 beam splitter with light signal, this 1*2 beam splitter is divided into two ways of optical signals with this light signal and transmits on two output waveguides respectively, the two ways of optical signals of transmitting on two output waveguides is imported this micro-ring resonator two coupled zones respectively, after the phase place and splitting ratio adjustment of this micro-ring resonant with two ways of optical signals, adjusted two ways of optical signals is transferred to two output waveguides, and these two output waveguides are exported adjusted two ways of optical signals by output terminal.

The control method of the optical switch device that the specific embodiment of the invention provides because it has adopted micro-ring resonator that the phase place and the splitting ratio of light signal are modulated, so it has the little advantage of loss, and has the high characteristics of extinction ratio.And design in advance or fine setting by to coupled zone coupling ratio can also be applicable to the occasion that modulation loss is big.

In sum, the technical scheme that the specific embodiment of the invention provides has the advantage that loss is little, extinction ratio is high.

The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (8)

1. an optical switch device comprises input waveguide, 1*2 beam splitter and two output waveguides; The input end of described 1*2 beam splitter links to each other with described input waveguide, and two output terminals of described 1*2 beam splitter link to each other with described two output waveguides respectively; It is characterized in that described device also comprises:

At least one micro-ring resonator and at least two coupled zones of setting;

Described two output waveguides are connected with micro-ring resonator in the coupled zone that is provided with respectively.

2. device according to claim 1 is characterized in that, described device also comprises: at least one phase compensator, described phase compensator is arranged on the described output waveguide, and regulates the light signal phase place of output waveguide.

3. device according to claim 1 is characterized in that, described device also comprises: optical phase modulator, described optical phase modulator is arranged on the described micro-ring resonator, and regulates the phase place of described micro-ring resonator light signal.

4. device according to claim 1 is characterized in that, described two output waveguides are connected specifically with micro-ring resonator in the coupled zone that is provided with respectively and comprise:

Micro-ring resonator and two coupled zones are set, described two output waveguides are arranged in a crossed manner, and two coupled zones are set are connected with a micro-ring resonator described respectively.

5. device according to claim 4 is characterized in that, described device also comprises:

Phase compensator and the 3rd coupled zone is set, first output waveguide is connected with micro-ring resonator in first coupled zone, second output waveguide is connected with micro-ring resonator with the 3rd coupled zone in second coupled zone, and described phase compensator is arranged between second coupled zone and the 3rd coupled zone on described second output waveguide.

6. device according to claim 1 is characterized in that, described two output waveguides are connected specifically with micro-ring resonator in the coupled zone that is provided with respectively and comprise:

Three coupled zones of two micro-ring resonators and setting, described two output waveguides are for be arrangeding in parallel, first output waveguide is connected with first micro-ring resonator in first coupled zone, second output waveguide is connected with second micro-ring resonator in second coupled zone, and described first micro-ring resonator links to each other in the 3rd coupled zone with described second micro-ring resonator.

7. device according to claim 1 is characterized in that, described two output waveguides are connected specifically with micro-ring resonator in the coupled zone that is provided with respectively and comprise:

Two coupled zones of micro-ring resonator and setting, described two output waveguides be arranged in parallel, and described micro-ring resonator is " 8 " type structure, and is connected with two output waveguides two coupled zones respectively.

8. the control method of an optical switch device comprises: input waveguide, 1*2 beam splitter and two output waveguides; The input end of described 1*2 beam splitter links to each other with described input waveguide, and two output terminals of described 1*2 beam splitter link to each other with described two output waveguides respectively, it is characterized in that, also comprise at least two coupled zones of at least one micro-ring resonator and setting; Described method comprises:

Described input waveguide is exported to described 1*2 beam splitter with light signal, described 1*2 beam splitter is divided into two ways of optical signals with described light signal and transmits in described two output waveguides, the two ways of optical signals of described two output waveguides transmission is imported described micro-ring resonator in two coupled zones that are provided with respectively, described micro-ring resonant is used to adjust the phase place and the splitting ratio of two ways of optical signals, and with the output terminal output of adjusted two ways of optical signals by described two output waveguides.

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